Resumo

MANTILLA GONZALEZ, Juan Miguel; GARZON ALVARADO, Diego Alexander  e  GALEANO URUENA, Carlos Humberto. Multivariate analysis of performance and emissions for internal combustion engines running with gasoline-ethanol blends. Energética [online]. 2015, vol.36, n.3, pp. 232-242. ISSN 1815-5901.

Recent years have shown an increasing interest in ethanol blending to gasoline fuel, as well as a rapid implementation of this kind of biofuels in countries like Colombia. Taking into account the lack of studies about performance and emissions characteristics for the local engines, and the fact that new biofuels policies are emerging using studies made for non-local conditions, a study is proposed in order to verify the real changes in those characteristics into the Colombian conditions. This article presents a performance and emission analysis when different independent variables act on two engines working with gasoline-ethanol blends up to 30 % of the latter. A set of dependent variables are introduced in order to verify the real statistical influence of independent variables. Results confirm trends reported by other authors; nevertheless, these tendencies are not always statistical representative, like in the case of ethanol concentration influence on combustion duration.

Palavras-chave : biofuel; emissions,gasoline-ethanol; internal combustion engine; performance; statistical analysis.

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